Upper limit (3)
'upper limit' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for ceiling that I've seen before include "upper limit on wages" , "likely to get plastered" , "Room's upper surface" , "Overhead surface" .)
'upper limit' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for cap that I've seen before include "Stopper" , "cover" , "Better; hat" , "Surpass by following with something better" , "Impose limit on" .)
'upper limit' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Another definition for max that I've seen is " The greatest".)